A process for preparing a double silver coated glass

Abstract

The application discloses a kind of double silver coating glass preparation process, it is related to glass coating technology field.The double silver coating glass preparation process includes the following steps: step one: glass substrate is placed to object table, and is sent to the inlet of composite coating cavity;Step two: make object table and glass substrate pass through composite coating cavity in vertical direction, and multiple film layers are coated to form composite film layer;Step three: glass substrate is sent out from the discharge port, is sent to the inlet by first conveying device, and object table is sent away from the discharge port, is sent to the inlet by second conveying device;Step four: repeat step two, and make composite film layer surface form a group of composite film layer again.By designing the composite film layer with silver layer, and making glass substrate pass through the same composite coating cavity twice to complete double silver layer coating, it is not necessary to set two groups of independent composite coating cavities for double silver film, significantly compresses the overall land area of equipment, reduces capital investment and production site cost.

Description

Technical Field

[0001] This invention relates to the field of glass coating technology, specifically to a process for preparing double-silver coated glass. Background Technology

[0002] Double-silver coated glass, with its excellent low radiation, heat insulation and light transmission performance brought by the double-layer silver film structure, is gradually becoming the choice for automotive sunroof glass. The core of its manufacturing process lies in the precise deposition of a composite film containing a silver layer on the surface of the glass substrate through technologies such as magnetron sputtering.

[0003] Traditional double silver coating production lines mostly adopt a horizontally linear arrangement of coating chambers. In order to complete the coating of double silver film and supporting film layers, multiple independent coating chambers need to be arranged in sequence. Moreover, the film layer structure is complex. Even if there is the same film layer, different coating chambers are required. Not only does the overall equipment occupy a large area, but the infrastructure and equipment investment costs are also high. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a process for preparing double-silver coated glass, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a process for preparing double-silver coated glass, comprising the following steps:

[0006] Step 1: Place the glass substrate on the stage and send it to the inlet of the composite coating chamber, which is composed of multiple first coating chambers connected in sequence.

[0007] Step 2: The stage and the glass substrate are passed through the composite coating cavity in the vertical direction, and multiple film layers are sequentially deposited on the surface of the glass substrate to form a composite film layer, the composite film layer including a silver layer;

[0008] Step 3: The glass substrate is sent out from the outlet and transported to the inlet by the first conveying device; the platform is sent out from the outlet and transported to the inlet by the second conveying device.

[0009] Step 4: Repeat step 2 to form another set of composite film layers on the surface of the composite film layer;

[0010] Step 5: Pass the stage and glass substrate vertically through the second coating chamber to coat the surface of the composite film with a protective layer, thus completing the coating process.

[0011] Furthermore, the platform includes: a frame; a conveyor roller rotatably mounted within the frame; a third motor fixed to the frame and used to drive the conveyor roller to rotate; and a protruding post rotatably disposed on the outside of the frame.

[0012] Furthermore, the first coating cavity includes: a first housing, the interior of which has an empty area through which the stage can pass; and a cathode target, which is slidably disposed within the first housing and whose moving area covers the area above the empty area.

[0013] Furthermore, vertical transfer devices are provided on both sides of the empty area inside the first housing. The vertical transfer devices are used to transfer the platform and the glass substrate. The vertical transfer devices include: a lifting mechanism, one end of which is fixed to the inner wall of the first housing; a movable frame, which is fixed to the other end of the lifting mechanism; a docking groove, which is rotatably disposed on the side of the movable frame near the empty area and engages with the protruding post, with one side of the docking groove being an opening; and a second motor, which is fixed to the first housing and is used to drive the lifting mechanism.

[0014] Furthermore, a drive gear is fixedly mounted on the shaft of the docking groove, and a rack is slidably mounted on the movable frame, with the drive gear meshing with the rack; a double-headed cylinder is fixedly mounted on the movable frame, and the telescopic rod of the double-headed cylinder is fixedly connected to the end of the rack for driving the rack to move.

[0015] Furthermore, the first housing is provided with a pick-and-place mechanism on both sides of the empty area. The pick-and-place mechanism is used to transfer the platform to the nearest movable frame. The pick-and-place mechanism includes: a worm gear, which is installed on the inner wall of the first housing; a support member, which is fixed to a shaft of the worm gear; and a roller, which is rotatably disposed at the end of the support member and can contact the protrusion.

[0016] Furthermore, a first buffer chamber is provided at the upper end of the composite coating chamber, and a second buffer chamber is provided between the composite coating chamber and the second coating chamber. The first buffer chamber and the second buffer chamber have the same structure. The first buffer chamber includes: a second housing; a side outlet, which is opened on the side of the second housing near the second conveying device; and a sealing plate, which is installed on the second housing and is used to close or open the side outlet. Isolation valves are provided at both ends of the first buffer chamber and the second buffer chamber, as well as at the end of the second coating chamber away from the second buffer chamber.

[0017] Furthermore, the first conveying device includes a first hoist and a receiving platform, the receiving platform being installed at the execution end of the first hoist and used for horizontally transferring the glass substrate.

[0018] Furthermore, the second conveying device includes a second elevator and a first conveyor belt, the first conveyor belt being installed at the execution end of the second elevator; a second conveyor belt is provided below the second coating cavity, the second conveyor belt being used to transfer the platform onto the first conveyor belt; the length of the first conveyor belt is less than the length of the platform.

[0019] Furthermore, a horizontal transfer device is provided above the feed inlet, which is used to transfer the platform from the first conveyor belt to the feed inlet; the horizontal transfer device includes: a second linear drive device, which is located above the feed inlet; a second slide, which is slidably mounted on the second linear drive device; and a pick-and-place mechanism is also installed on the second slide.

[0020] The present invention has the following beneficial effects:

[0021] (1) The double silver coating glass preparation process is designed with a composite film layer with silver layer and the glass substrate is coated with double silver layer twice through the same composite coating cavity. There is no need to set up two independent composite coating cavities for the double silver film, which greatly reduces the number of coating cavities required. At the same time, the first coating cavity, the second coating cavity and the buffer cavity are arranged in a vertical direction, replacing the traditional horizontal linear arrangement, which significantly reduces the overall footprint of the equipment and reduces infrastructure investment and production site costs.

[0022] (2) The double silver coated glass preparation process is achieved by setting up a vertical transfer device and a pick-and-place mechanism to cooperate with each other, and setting a protruding column structure on the stage to fit with the docking groove, so as to realize the smooth transfer of the stage between vertical chambers without interfering with the movement of the cathode target.

[0023] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0024] Figure 1 This is a process flow diagram of the present invention;

[0025] Figure 2 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the overall coating chamber layout of the present invention;

[0028] Figure 5 This is a schematic diagram of the first coating cavity structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the first coating cavity and the stage of the present invention.

[0030] Figure 7 This is a top view of the first coating cavity of the present invention;

[0031] Figure 8 This is a schematic diagram of the internal structure of the first coating cavity of the present invention;

[0032] Figure 9 This is a front view of the internal structure of the first coating cavity of the present invention;

[0033] Figure 10 This is a front view of the internal structure of the first coating cavity of the present invention in conjunction with the stage;

[0034] Figure 11 This is a side view of the internal structure of the first coating cavity of the present invention;

[0035] Figure 12 This is a top view of the loading and unloading mechanism and the vertical transfer device of the present invention in cooperation.

[0036] Figure 13 This is a schematic diagram of the vertical transfer device of the present invention;

[0037] Figure 14 This is a schematic diagram of the internal structure of the mobile frame of the present invention;

[0038] Figure 15 This is a schematic diagram of the internal structure of the first buffer cavity of the present invention;

[0039] Figure 16 This is a top view of the platform of the present invention;

[0040] Figure 17 This is a schematic diagram showing the cooperation between the first conveyor belt, the second conveyor belt, and the second elevator of the present invention;

[0041] Figure 18 This is a schematic diagram of the horizontal transfer device of the present invention;

[0042] Figure 19 This is a schematic diagram of the horizontal transfer device and the stage of the present invention in cooperation.

[0043] Figure 20 For the present invention Figure 17 Enlarged diagram of area A in the middle;

[0044] Figure 21 This is a schematic diagram of the double silver-coated glass film structure of the present invention.

[0045] In the diagram, 1. First conveying device; 2. Second conveying device; 3. First conveyor belt; 4. Second conveyor belt; 5. Receiving platform; 8. First coating chamber; 9. Second coating chamber; 10. First buffer chamber; 11. Second buffer chamber; 12. Isolation valve; 15. First housing; 16. Cathode target; 17. Empty area; 18. First motor; 19. First slide table; 20. First linear drive device; 21. Lifting mechanism; 22. Moving frame; 23. Docking groove; 24. Second motor; 25. Worm gear. 26. Rod; 27. Support; 28. Roller; 29. ​​Transmission rod; 30. Transmission gear; 31. Second slide; 32. Second linear drive device; 33. Frame; 34. Conveyor roller; 35. Protruding column; 36. Third motor; 37. Double-headed cylinder; 38. Drive gear; 39. Rack; 40. Second housing; 41. Side outlet; 42. Sealing plate; 43. Limiting component; 44. Conductive slide rail; 50. Glass substrate; 51. Adhesion layer; 52. Silver layer; 53. Interface layer; 54. Protective layer. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0048] The following is based on Figure 1 - Figure 21 The invention describes the preparation process of double-silver coated glass provided in the embodiments of the present invention.

[0049] Please see Figure 1 - Figure 6 This invention provides a technical solution: a process for preparing double-silver coated glass, comprising the following steps:

[0050] Step 1: Place the glass substrate 50 on the stage and send it to the inlet of the composite coating chamber. The composite coating chamber is composed of multiple first coating chambers 8 connected in sequence.

[0051] Step 2: The stage and the glass substrate 50 pass through the composite coating cavity in the vertical direction, and multiple film layers are sequentially deposited on the surface of the glass substrate 50 to form a composite film layer, including a silver layer 52.

[0052] Step 3: The glass substrate 50 is sent out from the outlet and transported to the inlet by the first conveyor 1, and the platform is transported to the inlet by the second conveyor 2.

[0053] Step 4: Repeat step 2 to form another set of composite film layers on the surface of the composite film layer;

[0054] Step 5: The stage and glass substrate 50 pass vertically through the second coating cavity 9 to coat a protective layer 54 on the surface of the composite film, thus completing the coating process.

[0055] This process allows the glass substrate 50 to pass through the composite coating chamber twice to complete the double silver layer coating, reducing the number of coating chambers required. Furthermore, the first coating chamber 8 and the second coating chamber 9 are arranged vertically, reducing the equipment footprint and thus lowering investment and production costs.

[0056] The process is described in detail below with reference to specific embodiments.

[0057] like Figure 21 As shown, in this embodiment, the adhesion layer 51, the silver layer 52 and the interface layer 53 of the double silver coated glass form a composite film layer. The adhesion layer 51 is a zinc oxide layer, the interface layer 53 is a nickel-chromium alloy layer and the protective layer 54 is a zirconium oxide layer. Therefore, the composite coating cavity is composed of three first coating cavities 8. It should be noted that the number of first coating cavities 8 is not limited to 3, but is adjusted according to the composition of the composite film layer.

[0058] like Figure 2-4 As shown, a first buffer chamber 10 is provided at the upper end of the composite coating chamber, and a second buffer chamber 11 is provided between the composite coating chamber and the second coating chamber 9. The first buffer chamber 10 and the second buffer chamber 11 have the same structure. Isolation valves 12 are provided at both ends of the first buffer chamber 10 and the second buffer chamber 11, as well as at the end of the second coating chamber 9 away from the second buffer chamber 11. The isolation valves 12 are used to close and open the first buffer chamber 10, the three first coating chambers 8 and the second coating chamber 9.

[0059] Specifically, the entire coating chamber is arranged in the following order in the vertical direction: isolation valve 12, first buffer chamber 10, isolation valve 12, three first coating chambers 8, isolation valve 12, second buffer chamber 11, isolation valve 12, second coating chamber 9, isolation valve 12. They are sealed to each other and have a through channel in the vertical direction, so that the vacuum degree in the coating chamber can be controlled through the first buffer chamber 10, the second buffer chamber 11 and the isolation valve 12.

[0060] It should be noted that, in this embodiment, since the composite film layer is composed of a zinc oxide layer, a silver layer and a nickel-chromium alloy layer, all three can be plated under an argon atmosphere. Therefore, the three first coating cavities 8 can be installed continuously and connected. When the composition of the composite film layer changes, the atmospheric requirements of different film layers need to be considered. When different atmospheres are required, such as when the composite film layer contains a silicon-aluminum alloy layer or a zinc-aluminum alloy layer, a mixture of argon and nitrogen gas needs to be introduced. In this case, isolation valves 12 need to be set between different first coating cavities 8 to play a role in isolation.

[0061] like Figure 3 and Figure 15 As shown, the first buffer chamber 10 includes a second housing 40. A side outlet 41 is provided on the side of the second housing 40 near the first conveying device 1. A sealing plate 42 is also installed on the second housing 40. The sealing plate 42 is driven by a motor or cylinder to close or open the side outlet 41.

[0062] The first buffer chamber 10 serves as the inlet, and the second buffer chamber 11 serves as the outlet.

[0063] Furthermore, the first conveying device 1 receives the glass substrate 50 that has completed one composite film coating from the side outlet 41 of the second buffer cavity 11, then transfers it to the side outlet 41 of the first buffer cavity 10, and sends it into the first buffer cavity 10 for a second composite film coating.

[0064] like Figure 16 As shown, in order to facilitate the transfer of the glass substrate 50, the stage includes a frame 33, in which a conveyor roller 34 is rotatably mounted, and a third motor 36 is fixed on the frame 33. The third motor 36 is used to drive the conveyor roller 34 to rotate. Specifically, adjacent conveyor rollers 34 can be connected by a synchronous belt or chain. The third motor 36 drives one of the conveyor rollers 34 through the synchronous belt or chain, thereby driving all the conveyor rollers 34 to rotate. When the stage is located in the second buffer chamber 11, the glass substrate 50 located on the conveyor roller 34 can be moved by starting the third motor 36, so that the glass substrate 50 is transferred to the first conveying device 1 through the corresponding side outlet 41.

[0065] It should be noted that the height of the two sides of the frame 33 parallel to the conveyor roller 34 should be lower than the top of the conveyor roller 34 to avoid collision with the glass substrate 50.

[0066] Furthermore, a protruding post 35 is provided on the outer side of the frame 33. In the figure, there are 4 protruding posts 35, which are symmetrically installed on the frame 33.

[0067] like Figure 5 - Figure 7As shown, in order to facilitate the stage to pass through the entire coating chamber in the vertical direction, the first coating chamber 8 includes a first housing 15. The interior of the first housing 15 has a cavity 17 through which the stage can pass. A cathode target 16 is slidably disposed inside the first housing 15. For ease of installation, the cathode target 16 is fixed on a first slide 19. The first slide 19 is driven by a first linear drive device 20. Preferably, the first linear drive device 20 is a lead screw slide device. The moving area of ​​the cathode target 16 covers the upper part of the cavity 17, thereby coating the glass substrate 50 located below.

[0068] Furthermore, the second coating cavity 9 has the same structure as the first coating cavity 8.

[0069] In this embodiment, the cathode target 16 in the three first coating cavities 8 is made of zinc oxide, silver and nickel-chromium alloy respectively, and the cathode target 16 in the second coating cavity 9 is made of zirconium oxide.

[0070] like Figure 7 - Figure 13 As shown, in order to facilitate the vertical movement of the stage and glass substrate 50 throughout the coating chamber, vertical transfer devices are provided on both sides of the empty area 17 inside the first housing 15. The vertical transfer devices are used to transfer the stage and glass substrate 50.

[0071] The aforementioned vertical transfer device includes a lifting mechanism 21. One end of the lifting mechanism 21 is fixed to the inner wall of the first housing 15. Preferably, the lifting mechanism 21 is a scissor-type lifting device to reduce the space occupied by the lifting mechanism 21 in the vertical direction. A movable frame 22 is fixed to the other end of the lifting mechanism 21, and a docking groove 23 is also provided on the movable frame 22. The docking groove 23 is rotatably located on the side of the movable frame 22 near the empty area 17 and fits with the protruding post 35. One side of the docking groove 23 is an opening, and the protruding post 35 can be inserted into the docking groove 23 in the vertical direction through the opening, thereby providing support for the platform.

[0072] Furthermore, a second motor 24 is fixed on the first housing 15 for driving the lifting mechanism 21 to operate.

[0073] To facilitate the movement of the stage, the vertical transfer device is also installed in the second coating chamber 9, the first buffer chamber 10, and the second buffer chamber 11, and serves the same function. When the stage completes the coating sequentially from top to bottom in the vertical direction, the current vertical transfer device lowers the stage to the docking position of the next layer of vertical transfer device. When the stage needs to be supported, the opening of the docking groove 23 should be in the upward direction. When the stage needs to be released, the opening of the docking groove 23 should be in the downward direction so that the protrusion 35 of the stage can disengage from the docking groove 23, that is, disengage from the current vertical transfer device.

[0074] like Figure 13 As shown, in order to achieve the above purpose, a drive gear 38 is fixedly provided on the shaft of the docking groove 23, and a rack 39 is slidably provided on the moving frame 22. The drive gear 38 meshes with the rack 39, and a double-headed cylinder 37 is fixedly provided on the moving frame 22. The telescopic rod of the double-headed cylinder 37 is fixedly connected to the end of the rack 39. When the double-headed cylinder 37 is driven, the rack 39 can be driven to move, thereby driving the drive gear 38 to rotate and adjusting the direction of the opening on the docking groove 23.

[0075] like Figure 6 - Figure 12 As shown, in order to cooperate with the vertical transfer device and transfer the platform from the current vertical transfer device to the next vertical transfer device, a pick-and-place mechanism is also provided on both sides of the empty area 17 inside the first housing 15. The pick-and-place mechanism is used to transfer the platform to the nearest movable frame 22, so that the protrusion 35 of the platform is inserted into the docking groove 23 on the movable frame 22.

[0076] The aforementioned pick-and-place mechanism includes a worm gear 25, which is mounted on the inner wall of the first housing 15. A support member 26 is fixedly provided on one shaft of the worm gear 25. Preferably, the support member 26 is L-shaped. A roller 27 is rotatably provided at the end of the support member 26. The roller 27 can contact the protrusion 35. A first motor 18 is also provided inside the first housing 15 to drive the worm gear 25 to rotate, thereby adjusting the angle of the support member 26 so that the height of the roller 27 changes with the adjustment of the angle of the support member 26.

[0077] To facilitate the movement of the platform, the aforementioned pick-and-place mechanism is also located in the first buffer cavity 10, the second buffer cavity 11, and the second coating cavity 9.

[0078] Optionally, a transmission rod 28 is provided between the two support members 26 on the same side. When the axis of the transmission rod 28 does not coincide with the rotation axis of the support member 26, a transmission gear 29 can be provided between the transmission rod 28 and the support member 26 for compensation, so that the first motor 18 can drive different support members 26 to rotate simultaneously.

[0079] Specifically, the current vertical transfer device descends to its lowest point, activating the next layer of pick-and-place mechanism. This causes the support member 26 to rotate, driving the roller 27 to move upwards until it contacts the bottom surface of the stage. Then, the current docking groove 23 is driven to rotate, so that its opening faces downwards. Next, the support member 26 is driven in the opposite direction to drive the roller 27 to descend. The stage, supported by the roller 27, descends synchronously until the protrusion 35 on the stage inserts into the docking groove 23 on the next layer of vertical transfer device. The support member 26 continues to rotate so that its projection in the vertical direction does not overlap with the stage, thereby smoothly transferring the stage and glass substrate 50 in different chambers.

[0080] It should be noted that, in order to facilitate power supply to the third motor 36 so that the conveyor roller 34 can rotate, a conductive output end can be provided in the docking groove 23 and a conductive input end can be provided on the protrusion 35.

[0081] like Figure 2 , Figure 3 and Figure 17 As shown, in order to facilitate the transfer of the glass substrate 50 after one composite film coating, the first conveying device 1 includes a first elevator and a receiving platform 5. The receiving platform 5 is installed at the execution end of the first elevator so that the first elevator can drive the receiving platform 5 to move in the vertical direction. The receiving platform 5 is used to transfer the glass substrate 50 in the horizontal direction. Preferably, the structure of the receiving platform 5 is the same as that of the loading platform so that when the receiving platform 5 moves to the first buffer cavity 10, the glass substrate 50 can be transferred into the first buffer cavity 10 through the side outlet 41.

[0082] like Figure 2 , Figure 3 , Figure 17 and Figure 20 As shown, in order to facilitate the cyclic transfer of the platform, the second conveying device 2 includes a second elevator and a first conveyor belt 3. The first conveyor belt 3 is installed at the execution end of the second elevator so that the second elevator can drive the first conveyor belt 3 to move in the vertical direction.

[0083] Furthermore, a second conveyor belt 4 is provided below the second coating chamber 9. When the stage is sent out from the second coating chamber 9, it can be transferred to the first conveyor belt 3 via the second conveyor belt 4. A limiting member 43 is provided on the second conveyor belt 4 to prevent the stage from detaching from the second conveyor belt 4. A conductive slide rail 44 is also provided on the second conveyor belt 4, which cooperates with the protrusion 35 with a conductive input end to supply power to the third motor 36 and drive the conveyor roller 34 to rotate. This allows the glass substrate 50, which has completed the second composite coating and the protective layer 54 coating, to detach from the stage and be transferred to the outside of the equipment. At the same time, the stage remains on the second conveyor belt 4. Then, another uncoated glass substrate 50 is placed back on the stage.

[0084] Furthermore, the length of the first conveyor belt 3 is less than the length of the platform.

[0085] like Figure 2 , Figure 3 , Figure 18 and Figure 19 As shown, in order to facilitate the transfer of the platform on the second conveyor 2 back to the inlet, i.e. the first buffer chamber 10, a horizontal transfer device is provided above the inlet. The horizontal transfer device is used to transfer the platform from the first conveyor belt 3 to the inlet.

[0086] The horizontal transfer device includes a second linear drive device 32, which is located above the feed inlet. Preferably, the second linear drive device 32 is a synchronous belt slide rail. A second slide table 31 is slidably mounted on the second linear drive device 32, and a pick-and-place mechanism is also installed on the second slide table 31. When the second conveying device 2 transports the platform to a position close to the bottom of the horizontal transfer device, the platform can be lifted by the pick-and-place mechanism and transported to the top of the feed inlet. Then, the platform is placed into the first buffer cavity 10 by the pick-and-place mechanism and supported by the docking groove 23 in the first buffer cavity 10.

[0087] Optionally, when the horizontal transfer device is too far from the first buffer cavity 10, an additional set of vertical transfer devices can be provided on the second linear drive device 32 directly above the first buffer cavity 10 to increase the height range of the movable platform.

[0088] During use (operation), the stage containing the glass substrate 50 is transported to the first buffer chamber 10. The stage is supported by the engagement of the docking groove 23 with the protrusion 35 on the stage. Then, through the cooperation of the vertical transfer device and the pick-and-place mechanism, the stage and the glass substrate 50 sequentially pass through multiple first coating chambers 8 to form a composite film layer. The stage and glass substrate 50 are then transported to the second buffer chamber 11. By driving the conveyor roller 34 on the stage, the glass substrate 50 is transferred through the side outlet 41 to the receiving platform 5 in the first conveying device 1. Afterwards, the glass substrate... The base 50 is transported to the first buffer cavity 10 via the first conveying device 1. The stage continues to move downward and passes through the second coating cavity 9. Then, it is transported to the area below the horizontal transfer device via the second conveying device 2. The stage is then placed back into the first buffer cavity 10 via the horizontal transfer device. At this time, the glass substrate 50 on the receiving platform 5 is transferred to the stage through the side outlet 41. The stage then returns to the above process with the glass substrate 50 to form the second composite film layer. Then, the stage and the glass substrate 50 pass through the second coating cavity 9 to coat the protective layer 54, thereby completing the coating.

[0089] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0090] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A process for preparing double-silver coated glass, characterized in that, Includes the following steps: Step 1: Place the glass substrate (50) on the stage and send it to the inlet of the composite coating chamber, which is composed of multiple first coating chambers (8) connected in sequence. Step 2: The stage and the glass substrate (50) pass through the composite coating cavity in the vertical direction, and multiple film layers are sequentially coated on the surface of the glass substrate (50) to form a composite film layer, the composite film layer including a silver layer (52). Step 3: The glass substrate (50) is sent out from the outlet and transported to the inlet by the first conveying device (1). The platform is sent out from the outlet and transported to the inlet by the second conveying device (2). Step 4: Repeat step 2 to form another set of composite film layers on the surface of the composite film layer; Step 5: Pass the stage and glass substrate (50) through the second coating cavity (9) in the vertical direction, and coat the surface of the composite film with a protective layer (54) to complete the coating; The stage includes: Frame (33); Conveyor roller (34), which is rotatably mounted inside frame (33); The third motor (36) is fixed on the frame (33) and is used to drive the conveyor roller (34) to rotate; A protruding post (35) is rotatably disposed on the outside of the frame (33); The first coating cavity (8) includes: A first housing (15) has an interior cavity (17) through which the stage can pass. A cathode target (16) is slidably disposed within the first housing (15), and the moving area covers the area above the empty area (17). The first housing (15) is provided with vertical transfer devices on both sides of the empty area (17), which are used to transfer the platform and the glass base (50). The vertical transfer device includes: A lifting mechanism (21), one end of which is fixed to the inner wall of the first housing (15); A movable frame (22) is fixed to the other end of the lifting mechanism (21); The docking groove (23) is rotatably disposed on the side of the movable frame (22) near the empty area (17) and fits with the protruding column (35). One side of the docking groove (23) is an opening. The second motor (24) is fixed on the first housing (15) and is used to drive the lifting mechanism (21) to operate; The shaft of the docking groove (23) is fixedly provided with a drive gear (38), and a rack (39) is slidably provided on the moving frame (22). The drive gear (38) meshes with the rack (39). A double-headed cylinder (37) is fixedly mounted on the movable frame (22). The telescopic rod of the double-headed cylinder (37) is fixedly connected to the end of the rack (39) for driving the rack (39) to move. The first housing (15) is also provided with pick-up and place mechanisms on both sides of the empty area (17), which are used to transfer the platform to the nearest mobile frame (22); The picking and placing mechanism includes: Worm gear (25), which is mounted on the inner wall of the first housing (15); Support member (26), said support member (26) is fixed to a shaft portion of worm gear (25); Roller (27), which is rotatably disposed at the end of the support member (26), and the roller (27) is able to contact the protrusion (35); The upper end of the composite coating cavity is provided with a first buffer cavity (10), and a second buffer cavity (11) is provided between the composite coating cavity and the second coating cavity (9). The first buffer cavity (10) and the second buffer cavity (11) have the same structure. The first buffer cavity (10) includes: Second housing (40); Side outlet (41), said side outlet (41) is opened on the side of the second housing (40) near the second conveying device (2); A sealing plate (42) is mounted on the second housing (40) for closing or opening the side outlet (41). Isolation valves (12) are provided at both ends of the first buffer chamber (10) and the second buffer chamber (11) as well as at the end of the second coating chamber (9) away from the second buffer chamber (11).

2. The process for preparing double-silver coated glass according to claim 1, characterized in that, The first conveying device (1) includes a first hoist and a receiving platform (5), the receiving platform (5) being installed at the execution end of the first hoist and used to transfer the glass substrate (50) in the horizontal direction.

3. The process for preparing double-silver coated glass according to claim 1, characterized in that, The second conveying device (2) includes a second elevator and a first conveyor belt (3), wherein the first conveyor belt (3) is installed at the execution end of the second elevator; A second conveyor belt (4) is provided below the second coating cavity (9), and the second conveyor belt (4) is used to transfer the stage to the first conveyor belt (3); The length of the first conveyor belt (3) is less than the length of the platform.

4. The process for preparing double-silver coated glass according to claim 3, characterized in that, A horizontal transfer device is provided above the feed inlet, which is used to transfer the platform from the first conveyor belt (3) to the feed inlet; The horizontal transfer device includes: The second linear drive device (32) is located above the feed inlet; The second slide (31) is slidably mounted on the second linear drive device (32); The second slide (31) is also equipped with a pick-and-place mechanism.

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